gestational age assessment
Last reviewed 08/2022
Gestational age assessment
- pregnant women should be offered an early ultrasound scan between 10 weeks
0 days and 13 weeks 6 days to determine gestational age and to detect multiple
pregnancies. This will ensure consistency of gestational age assessment and
reduce the incidence of induction of labour for prolonged pregnancy
- crown-rump length measurement should be used to determine gestational age. If the crown-rump length is above 84 mm, the gestational age should be estimated using head circumference
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